基于非线性薛定谔方程,采用分步傅里叶变换方法,分别讨论了高阶效应(包括三阶色散、自频移和自陡峭)对二阶呼吸子传输特性的影响。结果表明,高阶效应的增加使得偏移量为零的二阶呼吸子分解得越来越早,随着分解后呼吸子组之间距离的减小,它们之间的相互作用越来越强。对于偏移量不为零的二阶呼吸子,高阶效应的增加会使其再现频率变大,也即前后呼吸子组之间的距离变小,最后导致相互作用的产生。

According to the nonlinear Schrdinger (NLS) equations, by using split-step fourier transform method, we analyze the influence of third-order dispersion, self-frequency shift and self-steepening effect on the second-order breathers transmission characteristics, respectively. The results show that the higher-order effects increase makes,the second-order breather, whose offset is zero, decompose earlier. The interactions between the subgroups breathers after decomposition become stronger with the decrease of the distance between them. For the second-order breather, whose offset is not zero, the increase of higher-order effects make their reappearing frequency become larger that the distance between two breather subgroups become smaller, and then lead to interact.